What are two possible reasons for this behavior?

Topic 3, Troubleshooting and Support

A technician is trying to pair a Touch 8 with a Cisco TelePresence SX20 endpoint, but the codec is not automatically listed in the touch panel.

What are two possible reasons for this behavior? (Choose two.)
A . The codec firmware version is below version TC 6.1.
B . The codec and the Touch 8 are on separate subnets.
C . Pairing visibility mode is not active on the codec.
D . The codec is not compatible with a Touch 8 device.
E . The Touch 8 is connected via the second Ethernet port on the codec.

Answer: B, C